One second you're running normally, the next there's a sharp pain in the back of your calf, sometimes described as being kicked or hit from behind. If that just happened to you, here's what it actually means and what to do next. That specific sensation, a sudden sharp pain with no contact involved, is the classic sign of a calf strain, most often in the gastrocnemius muscle. It's common in running, tennis, and anything involving quick pushing off or changes of pace, which is

New Year, New Me! - how to safely get back into exercise and minimise the risk of injury